I have a Superlight 5th wheel that I've had for 10 years I bought new.
1. I typically turn the fridge on a couple of days before I leave while it's still plugged in. Once it's cold I throw in bag of ice in the freezer. I leave it on Auto for the entire trip.
2. Only dump the toilet and water when it's as full as convenient. The more black and gray water, the better it drains out.
3. yes.
4. You'll always be working on it and spending some $$. Always good to find a good local service guy but you have to be handy and carry lots of tools. At least be able to winterize and service it. I recently had to find someone to help me replace half the kitchen floor.
Also, have a commercial trailer repair outfit check the wheel bearings.
And consider replacing the tires.
5. Yes, the frames are prone to breaking. Find a trailer repair business, like for commercial trailers, and have them inspect it. I spent $3500 to fix mine (2nd time) and was given no warranty (and they usually give a limited warranty).
I usually take mine out 3 or 4 times a year. My longest trips are usually 2k-4k miles. My short ones are 300 miles r/t.
